From d45e3606e6aded54183c19af053363ce87160435 Mon Sep 17 00:00:00 2001
From: Amaar Quadri <amaarquadri@gmail.com>
Date: Thu, 27 Jul 2023 11:25:26 -0400
Subject: [PATCH] Improve error message

---
 pyransac3d/sphere.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pyransac3d/sphere.py b/pyransac3d/sphere.py
index 3f18284..74e5fce 100644
--- a/pyransac3d/sphere.py
+++ b/pyransac3d/sphere.py
@@ -38,6 +38,9 @@ def fit(self, pts, thresh=0.2, maxIteration=1000):
         n_points = pts.shape[0]
         best_inliers = self.inliers
 
+        if n_points < 4:
+            raise ValueError("Point cloud must contain at least 4 points!")
+
         for it in range(maxIteration):
 
             # Samples 4 random points